package com.stock.helper;
import com.google.common.util.concurrent.RateLimiter;
import com.stock.enums.CodeEnum;
import com.stock.response.ResponseResult;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Pointcut;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
@Aspect
@Component
@SuppressWarnings("all")
public class LimiterAspect {

    @Autowired
    private RateLimiter rateLimiter;

    @Pointcut(value = "@annotation(com.stock.annotation.Limiter)")
    public void pt() {
    }

    @Around(value = "pt()")
    public Object limiter(ProceedingJoinPoint pjp) throws Throwable {
        // 流量
        boolean flag = rateLimiter.tryAcquire();
        if (flag) {
            return pjp.proceed();
        } else {
            return ResponseResult.error(CodeEnum.OVER_CONCURRENT_NUM);
        }
    }

}